TM-9-2350-311-10 M109 Operator's Manual for M109A2, M109A3, M109A4 and M109A5 Download
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TM 9-2350-311-10 Item No. 44 Interval After Table 2-1. PREVENTIVE MAINTENANCE CHECKS AND SERVICES FOR M109 SELF-PROPELLED HOWITZER - CONTINUED 2-64 Change 2 Location Item to Check/ Service Final Drive Sprockets (Cont) Crewmember Procedure DRIVER 2. Visually check wear marks (5) on tooth (6). If wear mark disappears, notify unit mainte- nance. c. Check T-154 track sprocket teeth for excessive wear. Visually check wear marks (5) on two teeth (6). Jot Fully Mission Capable If: Near mark (5) on final drive sprock- et is not visible. One or more sprocket teeth are worn into edge of wear in- dicator. One or more sprocket teeth are showing ex- cessive wear.